The former Victoria’s Secret model had no problem posing naked for Reebok. In a recent interview with Elle magazine, she commented: “I have no problems with showing my body. I’m Danish. Everyone’s naked on the beaches. We don’t really give a s***.”

The 41 year-old Danish-born model and Mother said: “I could feel these working right away which is why I’ve stuck with them. Living in New York, I like to walk everywhere, so to have trainers that tone your legs and butt as you walk is fantastic.”

Nike and Adidas both have “leg and butt toning” shoes available as well. But are they worth the price?

Our guinea pig, reader Andrea, 27, wore the EasyTone shoes around for a week to see if she noticed a difference.

“They definitely feel more moulded to my feet than any other shoes I have worn,” she explains. “They hurt my calves a little at first but I didn’t mind because it made me think they were actually working! The shoes are quite spongy and supportive and I think if you wore them as often as you could over a lengthy period of time then you might just get a mini treadmill workout.”